Societe Anonyme: Poclain Hydraulics

Case Poclain Corporation Ltd.

Antoine Theodore Mauboussin

Louis E Martin

Jean-Claude A Lefevre

The invention relates to a pressure-regulating valve with slide valve, comprising three decreasingly pressurized enclosures: an admission chamber, a discharge chamber and a return chamber. Said valve comprises means for creating a communication, in the intermediate position of the slide valve, between the discharge chamber and the return chamber, which means constitute a restriction whose dimensions are selected so that the fluid flowing therethrough is equal to the maximum value of the flow of fluid between the admission chamber and the discharge chamber. The present invention finds an application in the production of a stable hydraulic handling machine.

Fluid pressure regulating valve

A servo-operated fluid flow control valve includes a valve body housing a main valve which defines with the body an inlet chamber, an exhaust chamber, and a control chamber. An auxiliary valve is interposed between the control and exhaust chambers and is movable relative to the main valve by a jack controlled by a regulator. The arrangement is such that when the auxiliary valve is closed, the inlet and control chambers are in communication, and when the auxiliary valve is open, the control and exhaust chambers are in communication while the inlet and control chambers are isolated from each other.

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Montfermeil, France

Antoine Theodore Mauboussin